package org.duanyu.shopping_manager_api.security;

import lombok.val;
import org.apache.dubbo.config.annotation.DubboReference;
import org.duanyu.shopping_common.pojo.Admin;
import org.duanyu.shopping_common.pojo.Permission;
import org.duanyu.shopping_common.service.AdminService;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;

@Service
public class MyUserDetailService implements UserDetailsService {

    @DubboReference
    private AdminService adminService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        //1.认证
        Admin admin = adminService.findByAdminName(username);
        if (admin == null) {
            throw new UsernameNotFoundException(username);  //用户名找不到
        }

        //2.授权
        List<Permission> permissions = adminService.findAllPermission(username);
        List<GrantedAuthority> grantedAuthorities = new ArrayList<>();
        if (permissions.get(0)!=null) {
            for (Permission permission : permissions) {
                grantedAuthorities.add(new SimpleGrantedAuthority(permission.getUrl()));
            }
        }
        //封装userDetails对象
        return User.withUsername(admin.getUsername()).password(admin.getPassword()).authorities(grantedAuthorities).build();
    }
}
